32923981 has 2 divisors, whose sum is σ = 32923982. Its totient is φ = 32923980.

The previous prime is 32923973. The next prime is 32924009. The reversal of 32923981 is 18932923.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20848356 + 12075625 = 4566^2 + 3475^2 .

It is a cyclic number.

It is not a de Polignac number, because 32923981 - 2³ = 32923973 is a prime.

It is a super-2 number, since 2×32923981² = 2167977049776722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32923981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32923901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16461990 + 16461991.

It is an arithmetic number, because the mean of its divisors is an integer number (16461991).

Almost surely, 2^32923981 is an apocalyptic number.

It is an amenable number.

32923981 is a deficient number, since it is larger than the sum of its proper divisors (1).

32923981 is an equidigital number, since it uses as much as digits as its factorization.

32923981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 37.

The square root of 32923981 is about 5737.9422269660. The cubic root of 32923981 is about 320.5069471164.

It can be divided in two parts, 329 and 23981, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 32923981 in words is "thirty-two million, nine hundred twenty-three thousand, nine hundred eighty-one".